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Reports linefeed (<code>\n</code>) and carriage return (<code>\r</code>) character escape sequences used in string literals,
character literals or text blocks. These characters are commonly used as line separators, and portability may suffer if they are hardcoded.
<p><b>Example:</b></p>
<pre><code>
  String count = "first\nsecond\rthird";
</code></pre>
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